Cache lists in CoreData

Tusker/API/MastodonController.swift

@@ -317,6 +317,17 @@ class MastodonController: ObservableObject {
                 DispatchQueue.main.async {
                     self.lists = lists.sorted(using: SemiCaseSensitiveComparator.keyPath(\.title))
                 }
+                let context = self.persistentContainer.backgroundContext
+                context.perform {
+                    for list in lists {
+                        if let existing = try? context.fetch(ListMO.fetchRequest(id: list.id)).first {
+                            existing.updateFrom(apiList: list)
+                        } else {
+                            _ = ListMO(apiList: list, context: context)
+                        }
+                    }
+                    self.persistentContainer.save(context: context)
+                }
             }
         }
     }

Tusker/CoreData/ListMO.swift

@@ -0,0 +1,41 @@
+//
+//  ListMO.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 12/20/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+import CoreData
+import Pachyderm
+
+@objc(ListMO)
+public final class ListMO: NSManagedObject {
+    
+    @nonobjc public class func fetchRequest() -> NSFetchRequest<ListMO> {
+        return NSFetchRequest(entityName: "List")
+    }
+    
+    @nonobjc public class func fetchRequest(id: String) -> NSFetchRequest<ListMO> {
+        let req = NSFetchRequest<ListMO>(entityName: "List")
+        req.predicate = NSPredicate(format: "id = %@", id)
+        return req
+    }
+    
+    @NSManaged public var id: String
+    @NSManaged public var title: String
+    
+}
+
+extension ListMO {
+    convenience init(apiList list: List, context: NSManagedObjectContext) {
+        self.init(context: context)
+        self.updateFrom(apiList: list)
+    }
+    
+    func updateFrom(apiList list: List) {
+        self.id = list.id
+        self.title = list.title
+    }
+}

Tusker/CoreData/Tusker.xcdatamodeld/Tusker.xcdatamodel/contents

@@ -46,6 +46,15 @@
         <attribute name="name" attributeType="String"/>
         <attribute name="url" attributeType="URI"/>
     </entity>
+    <entity name="List" representedClassName="ListMO" syncable="YES">
+        <attribute name="id" optional="YES" attributeType="String"/>
+        <attribute name="title" optional="YES" attributeType="String"/>
+        <uniquenessConstraints>
+            <uniquenessConstraint>
+                <constraint value="id"/>
+            </uniquenessConstraint>
+        </uniquenessConstraints>
+    </entity>
     <entity name="Relationship" representedClassName="RelationshipMO" syncable="YES">
         <attribute name="accountID" optional="YES" attributeType="String"/>
         <attribute name="blocking" optional="YES" attributeType="Boolean" usesScalarValueType="YES"/>
@@ -121,5 +130,6 @@
         <memberEntity name="Relationship"/>
         <memberEntity name="Status"/>
         <memberEntity name="TimelineState"/>
+        <memberEntity name="List"/>
     </configuration>
 </model>